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Now showing items 2335-2354 of 7879
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Evidence for cosmic acceleration with next-generation surveys: A model-independent approach
(Oxford University Press, 2020)We quantify the evidence for cosmic acceleration using simulations of H(z) measurements from SKA- and Euclid-like surveys. We perform a non-parametric reconstruction of the Hubble parameters and its derivative to obtain ... -
Evidence for rapid evolution of periodic variations in an ultracool dwarf
(Oxford University Press, 2006)The results of three short photometric monitoring runs on the L0 dwarf 2MASS J06050196−2342270, during three consecutive nights, are presented. The observations show the persistent presence of a 2.4-h period, with an IC ... -
Evidence from the Vredefort Granophyre Dikes points to crustal relaxation following basin-size impact cratering
(Academic Press Inc., 2021-11-24)The timescale of the modification stage of basin-sized impact structures is not well understood. Owing to ca. 10 km of erosion since its formation, the Vredefort impact structure, South Africa, is an ideal testing ground ... -
Evidence from three models of land and agricultural commercialisation: Impacts on local livelihoods in Zambia
(Institute for Poverty, Land and Agrarian Studies, University of the Western Cape, 2016)Zambia needs to undergo structural transformation triggered by increased agricultural and rural labour productivity if it is to achieve improved growth and broad-based poverty reduction. The current experience, however, ... -
Evidence from three models of land and agricultural commercialization: Impacts on local livelihoods in Zambia
(Institute for Poverty Land and Agrarian Studies (PLAAS), 2016)The approach favoured by most donors is to stimulate growth in smallholder agriculture by a variety of interventions ranging from production technology to market development. Some, however, contend that agricultural ... -
Evidence obtained through violating the right to freedom from torture and other cruel, inhuman or degrading treatment in South Africa
(Pretoria University Law Press (PULP), 2015)Although South African courts have expressly held that any evidence obtained through torture is always inadmissible, the author is unaware of a decision from a South African court to the effect that evidence obtained through ... -
Evidence of past and current collaborations between traditional health practitioners and biomedical health practitioners: A scoping review protocol
(BMJ PUBLISHING GROUP, 2021)Healthcare seekers around the globe use more than one healthcare system, with most using the traditional and the Western approaches concurrently. To date, little collaboration between the two systems has taken place ... -
Evidence of pervasive biologically functional secondary structures within the Genomes of Eukaryotic Single-Stranded DNA Viruses
(American Society for Microbiology, 2013)Single-stranded DNA (ssDNA) viruses have genomes that are potentially capable of forming complex secondary structures through Watson-Crick base pairing between their constituent nucleotides. A few of the structural elements ... -
Evidence that dicot-infecting mastreviruses are particularly prone to inter-species recombination and have likely been circulating in Australia for longer than in Africa and the Middle East
(Elsevier, 2013)Viruses of the genus Mastrevirus (family Geminiviridae) are transmitted by leafhoppers and infect either mono- or dicotyledonous plants. Here we have determined the full length sequences of 49 dicot-infecting mastrevirus ... -
An evidence-based approach to learning and teaching during the 2020 COVID-19 pandemic
(José Frantz, 2021)On 5 March 2020, South Africa’s Health Minister confirmed that the first case of Covid-19 had been detected in the country and on 15 March the President announced a national state of disaster, followed by various measures ... -
Evidence-based practices of promoting entrepreneurship education in higher education institutions in Africa
(International Foundation for Research and Development (IFRD), 2016)This research applies the changing of cognitive mechanisms of University students through Entrepreneurship Education (EE). The study hypothesises that entrepreneurial orientation (achievement orientation, personal control, ... -
Evolution and structural analysis of Glossina morsitans (Diptera; Glossinidae) Tetraspanins
(MDPI, Basel, Switzerland, 2014)Tetraspanins are important conserved integral membrane proteins expressed in many organisms. Although there is limited knowledge about the full repertoire, evolution and structural characteristics of individual members ... -
Evolution from 4f-electron antiferromagnetic to ferromagnetic order in the CeCu(Ge1-xSnx) alloy series (0≤x≤1)
(American Institute of Physics Inc., 2017)We report the evolution from ferromagnetic (FM) to antiferromagnetic (AFM) state in CeCu(Ge1-xSnx) investigated by means of magnetic and heat capacity measurements. X-ray diffraction studies for all compositions indicate ... -
Evolution of faint radio sources in the VIDEO-XMM3 field
(OUP, 2013)It has been speculated that low luminosity radio-loud AGN have the potential to serve as an important source of AGN feedback, and may be responsible for suppressing star-formation activity in massive elliptical galaxies ... -
Evolution of star formation in the UKIDSS ultra deep survey field - I. Luminosity functions and cosmic star formation rate out of z = 1.6
(OUP, 2013)We present new results on the cosmic star formation history in the SXDS-UDS field out to z = 1.6. We compile narrow-band data from the Subaru Telescope and the Visible and Infrared Survey Telescope for Astronomy (VISTA) ... -
Evolution of the chemical composition of Sn thin films heated during x-ray photoelectron spectroscopy
(2019)High-vacuum XPS have been used to analyse the surface modification of a 3 nm-thick Sn thin film on Si (100) before and after annealing up to 450 °C. Increasing the XPS stage temperature led to a reduction in the amount of ... -
The Evolution of the concept of 'unfair discrimination' in South African Labour Law
(Juta Law, 2006)Introduction:This article examines the meaning and scope of the prohibition of unfair discrimination against employees contained in s 6 of the Employment Equity Act in the light of the development of the concept of 'unfair ... -
The evolution of the low-frequency radio AGN population to z 1.5 in the ELAIS N1 field
(Advance Access publication, 2020-11-13)We study the cosmic evolution of radio sources out to z 1.5 using a GMRT 610 MHz survey covering ∼1.86 deg2 of the ELAIS N1 field with a minimum/median rms noise 7.1/19.5 μJy beam−1 and an angular resolution of 6 arcsec. ... -
The evolution of the low-frequency radio AGN population to z 1.5 in the ELAIS N1 field
(Oxford University Press, 2021)We study the cosmic evolution of radio sources out to z ≃ 1.5 using a GMRT 610 MHz survey covering ∼1.86 deg2 of the ELAIS N1 field with a minimum/median rms noise 7.1/19.5 μJy beam−1 and an angular resolution of 6 arcsec. ... -
The evolution of the nosology of osteogenesis imperfecta
(Wiley-Blackwell, 2021)Osteogenesis imperfecta (OI) is a relatively common genetic skeletal disorder with an estimated frequency of 1 in 20 000 worldwide. The manifestations are diverse and although individually rare, the several different forms ...